Wideband microstrip patch antenna on a thick substrate

Author

Manteghi, Majid

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

There are various methods to increase the bandwidth of a microstrip patch antenna. One of the most common methods used to increase the bandwidth of a microstrip patch antenna is to increase the substrate thickness. This method allows circular polarization simply by exciting two orthogonal modes of the patch with 90deg out of phase signals. The feed reactance usually is very small in comparison to the radiation resistance for thin substrates. However, increasing the substrate thickness will increase the feed reactance. This paper presents a novel method for controlling the feed reactance by introducing a series distributed capacitor into the patch structure.

Keywords

antenna feeds; broadband antennas; capacitors; microstrip antennas; circular polarization; distributed capacitor; feed reactance; orthogonal modes; radiation resistance; thick substrate; thin substrates; wideband microstrip patch antenna; Bandwidth; Broadband antennas; Capacitors; Dielectric losses; Dielectric substrates; Feeds; Inductors; Microstrip antennas; Patch antennas; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619868

Filename

4619868